Show list of products in Mercadopago's personalized checkout

I am integrating mercadopago into a project with shopping cart and I need that when the user goes to checkout he can see the list of products with the amount for each one in the checkout of mercadopago . So far it shows only the total for all products, but only the name and quantity of the first.

//datos que se encuentran en el arreglo para crear las preferencias
array:1 [//$preference_data
  "items" => array:2 [
    0 => array:4 [
      "title" => "Segundo producto"
      "quantity" => 1
      "currency_id" => "VEF"
      "unit_price" => 3000000.0
    ]
    1 => array:4 [
      "title" => "Primer producto"
      "quantity" => 1
      "currency_id" => "VEF"
      "unit_price" => 2500000.0
    ]
  ]
]

The above data is created with the next cycle with the products.

 $preference_data = [
    "items" => []
 ];
 //recorro los productos en la compra y los agrego.
 foreach($fact->compras as $i){
    $preference_data["items"][] = [
        "title" => $i->items->titles->first()->text,
        "quantity" => $i->qty,
        "currency_id" => "VEF",
        "unit_price" => $this->helper()->calcOffer($i->items)
    ];
 }

and finally I think the preference with the arrangement and the products.

 $preference = $mp->create_preference ($preference_data);

Finally I show the button with

<a href="{{$preference['response']['sandbox_init_point']}}" name="MP-Checkout" class="lightblue-M-Ov-ArOn" onreturn="execute_my_onreturn">Enviar pago</a>
<script type="text/javascript" src="https://www.mercadopago.com/org-img/jsapi/mptools/buttons/render.js"></script>

this shows "Second product", and the total amount of both products Bs. 5.500.00000

Is it possible to show the most detailed list? like names, quantities, subtotals by products?